Improvement in gas apparatus



1.. D. GATHELL.

Gas-Apparatus.

Patented April 27, 1875.

1120612 for. far

Wt in @5565. )4- W W UNITED STATES PATENT Qrrron,

JONATHAN D. GATHELL, OF GEORGETOWN, DISTRICT OF COLUMBIA.

IMPROVEMENT lN GAS APPARATUS.

Specification forming part of Letters Patent No. 162,625, dated April27, 1t75; application filed April 12, 1875.

To all whom it may concern Be it known that I, JONATHAN D. CATH- ELL, ofGeorgetown, in the District of Columbia, have invented a certainImprovement in Apparatus for the Manufacture of Illuminat ing-Gas, ofwhich the following is a specification This invention, having referenceto the manner of conducting the gas from the retort into the hydraulicmain, relates to that class of apparatus in which two channels areprovided for this purpose: first, the ordinary stationary dip-pipe,sealed at its lower end by the liquid contents of the main; andsecondly, a branch pipe, controlled by a valve or cook, for admittingthe gas directly into the upper part of the main, without passingthrough the liquid therein, the end sought by the use of the branch pipebeing an increase in the quality and pro duction of the gas, byproviding for its unobstructed flow from the retort into the hydraulicmain. The methods of construction heretofore proposed for applying thebranch pipe necessitated a reconstruction of some portions of theconnections between the retort and hydraulic main, as well as thesubstitution of one or more new pipes for such as are now in almostuniversal use in such apparatus. Thus to apply such a branch pipe wasnot only connected with considerable expense, but it would alsointerrupt the use of the apparatus for a length of time which could illybe spared where the works were of a limited character. The object of myinvention is to overcome these objections, by providing a branch pipewhich can be attached without disturbing the connections between theretort and the main, and the application of which will require scarcelyany suspension in the operation of the apparatus.

In the annexed drawing, illustrating my invention, partly in section andpartly in elevation, A refers to the stand-pipe of the retort,

(not shown 5) B, to the bridge O, to the dippipe; and l), to thehydraulic main. The bridge in almost universal use in gas-works isconstructed, as I have illustrated it, with a short nozzle, B to admitof the introduction of a swab for cleaning its inclined portion, thenozzle, like the nozzles B and B also provided for cleaning purposes,being ordinarily closed by a cap or plug. I take advantage of theexistence of this nozzle B in the application of my branch pipe, which Ipreferably construct in three sections, namely, the section E, attachedto the nozzle B section E, containing the valve I and section Econnected to and opening into the upper portion of the main on the sidethereof. It will be seen that it is only necessary to cut an aperture inthe side of the main in order to apply my branch pipe, all theconnections remaining undisturbed. The valve F may be an ordinarythrottle-valve, as shown, operated by a rod, F. It is kept open duringthe production of gas in the retort, and closed when the retort is to berecharged. Should the attendant neglect to open the valve when theretort is again put in operation, the gas can still find an exit throughthe dip-pipe, so that no effects damaging to the apparatus will resultfrom such neglect.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination, with the dippipe O and bridge B, having nozzle B of thebranch pipe, leading from said nozzle to the upper portion of the mainD, and controlled by a valve, F, substantially as and for the purposespecified.

In testimony whereof I have signed my name to the foregoingspecification in the presence of two subscribing witnesses.

J. D. OATHELL.

Witnesses:

B. EDW. J. EILS, D. P. OowL.

